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In this paper we examine a dual frequency structure suitable for mobile communications. We present a closed form solution to the triple stub section combined with the patch parameters obtained experimentally and by using a commercial simulation tool. This patch design technique allows for straightforward multiband operation without active circuitry or use of duplexers. Also presented was a method of optimizing a matching structure using genetic algorithms to solve a multivariable stub positioning problem related to impedance matching whilst at the same time limiting any radiation due to multimode excitation in the patch.
Antennas and Propagation Society International Symposium, 2003. IEEE (Volume:4 )
Date of Conference: 22-27 June 2003